DTD 类型约束文件
    1. Window->Preferences->XML->XML Catalog->User Specified Entries窗口中,选择Add 按纽
       
    2.在Add XML Catalog Entry 对话框中选择或输入以下内容:
        Location: F:/soft/programmingSoft/Framework/Ibatis/sql-map-config-2.dtd
        Key Type: URI
        KEY: http://ibatis.apache.org/dtd/sql-map-config-2.dtd
       
XSD 类型约束文件

    1. Window->Preferences->XML->XML Catalog->User Specified Entries窗口中,选择Add 按纽
       
    2.在Add XML Catalog Entry 对话框中选择或输入以下内容:
        Location: F:/soft/programmingSoft/Framework/Spring/spring-framework-2.5.6.SEC01-with-dependencies/spring-framework-2.5.6.SEC01/dist/resources/spring-beans-2.5.xsd
        Key Type: Schema Location
        KEY: http://www.springframework.org/schema/beans/spring-beans-2.5.xsd